Product details:
Quiet Operation for Bedroom Use: Ultrasonic humidifiers are incredibly silent, produces less than 38 dB of noise; perfect for your baby and a disturbance-free sleep at night 4L Tank Capacity, Works for All Night: Over a gallon of water lasts for 12-30 hour working time on a full tank; designed to humidify the air in rooms up to 10-30 m2 / 107-322 ft2, bedroom, nursery, office and so on Informative LED display: Built-in Humidistat tells you the current RH; Easily choose between three mist levels; Set your desired humidity level, 40-60% is best Nightlight & Sleep Mode: Choose to turn on the nightlight, or enter sleep mode to shut off LED screen for a discreet sleep at night Note: Please do NOT use with essential oils, which will damage the machine and cause leakage problem.